A wave is a continuous transfer of disturbance from one part of a medium to another through successive vibrations of particles of the medium about their mean positions. This note provides us an information on types of wave.
If the vibrating particles of the medium oscillate to the same direction of propagation of the wave is called a longitudinal wave. This note provides us an information on longitudinal wave and progressive wave.
According to superposition principle, if two or more waves are travelling in a medium at the same time, then the resultant displacement of waves is equal to the vector sum of individual displacement of the wave. This note provides us an information on principle of superposition and stationary waves.
Sound waves are reflected from the surfaces like light waves, obeying laws of reflection; angle of incident is equal to the angle of reflection. This note provides us an information on reflection, refraction, diffraction and interference of sound waves.